The rate of reaction is directly proportional to the concentration of an enzyme which statement is incorrect in this respect_________________?
Correct answer: B. This relation is for unlimited time period with unlimited enzyme concentration
- A. Increase in enzyme molecule increases the available active sites.
- B. This relation is for unlimited time period with unlimited enzyme concentration
- C. If the concentration is doubled the rate will become two fold.
- D. None of these.Chemistry
Explanation
The rate is approximately directly proportional to enzyme concentration only when sufficient substrate is available and other conditions remain suitable; it is not valid for unlimited time and unlimited enzyme concentration. A likely mistake is choosing c, but doubling enzyme can double the rate only while substrate and other limiting factors do not restrict the reaction.
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About Factors Affecting Enzyme Action
Enzyme activity changes with temperature, pH, substrate concentration and enzyme concentration because these factors affect molecular collisions and the active site. Questions also examine optimum conditions, denaturation and inhibition, while distinguishing a fall in activity caused by unsuitable conditions from permanent enzyme damage.
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